Maybe the way the players of the Simulation Hockey League avoid injury is that the league actually keeps clones of every player frozen in cryo statis at each area. That way, when a player gets injured they simply "take them to the locker room" for evaluation, where they are promptly put down like the lame horse they are. The dead player is then incinerated before anyone is the wiser. 

As one could imagine, the costs for doing this are immense. These costs are passed onto the teams and this explains why player salaries are so comically low in the SHL. This is kept a secret from the players, as it would cause extreme discontent if they knew they would be replaced by a clone when they had an injury as small as a stubbed toe. The cloned players are given the memories of the now deceased player they are replacing. The SHL commissioner deems this a necessary evil to ensure the product is not negatively effected by injuries.